I’ve almost finished the build of my 72 interstate and was having a close look at the tank about to take it to the painter. There is a small dent just in front of the fuel filler. It almost looks like it is supposed to be there as the fuel cap hook catch almost fits there if the cap is pressed down when closing. I haven’t got another tank close by to compare. Is it original? It’s an odd place to get a dent and is only 20 mm diameter (less than an inch).